In all examples I've seen, they're similar to this
onconnect = function(e) {
var port = e.ports[0];
port.onmessage = function(e) {
var workerResult = 'Result: ' + (e.data[0] * e.data[1]);
port.postMessage(workerResult);
}
port.start();
}
Is there an instance where the ports array will ever have more than one element? Using chrome://inspect on the SharedWorker and printing out e
, I get
regardless of how many instances are spawned sharing the SharedWorker, where the length is always 1. Why isn't it just a MessageEvent instead of an array? What use case is there for it to be an array?
The reason is that it reuses the MessageEvent
interface which can sometimes be dispatched with an array of multiple ports. That's all.
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